| 학회 | 한국화학공학회 |
| 학술대회 | 2009년 봄 (04/23 ~ 04/24, 광주 김대중컨벤션센터) |
| 권호 | 15권 1호, p.1108 |
| 발표분야 | 촉매 및 반응공학 |
| 제목 | Preparation and characterization of ρ-Al2O3 using flash calcinations for catalytic applications |
| 초록 | Transition alumina, γ-, ρ-, η-, χ-Al2O3 etc is an important class of materials as a binder, adsorbent and catalyst.Recently, the transition alumina, ρ-Al2O3 has drawn much attention due to unique rehydration property that is beneficial for the washcoat or forming process, such as dense body, pellet or sphere.However, the preparation ρ-Al2O3 from Al(OH)3 is not straightforward because it needs heat treatment in vaccum or flash calcination within 1-10 sec.There is also a lack of information of ρ-Al2O3 including surface properties, thermal behavior, etc. In this work, the Al(OH)3 with different particle sizes, 8-100 μm was used for the preparation of ρ-Al2O3 using flash calcination at673-973 K.The obatined alumina was characterized with X-ray diffraction method, TGA, BET, scanning elecron microscophy and mercury porosimeter.The crystalline morphorlogy of the Al(OH)3 was retained upon the flash calcination, which was found to be typical ρ-Al2O3 referred from X-ray diffraction. The amount of water contained inρ-Al2O3 can be controlled to 4-7% that was found to be critical for the binding ability when it was rehydrated. |
| 저자 | 선민호1, 조성준1, 주빛나1, 김수겸2, 이균호2, 유명종2 |
| 소속 | 1전남대, 2한국항공우주(연) |
| 키워드 | Transition alumina; flash calcination; catalytic applications |
| 원문파일 | 초록 보기 |
